大同机场建设用地地质灾害危险性评估
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摘要
大同机场场址预选在大同县倍加皂镇以北 ,根据以往的地质信息资料 ,沿拟建机场的飞机主跑道线 ,横穿了七条第四系松散层断裂 ,这些断裂埋深 5～ 70m ,且与区域活动断裂走向一致。飞机主跑道是否会受到断裂引发的地裂缝破坏 ,是危险性评估的重点。为此 ,本次对飞机主跑道线进行深层地震勘探 ,勘探深度 1 0 0 0m ,完全穿透松散层的底界 ,并进入基岩 1 4 0～ 40 0m ,很好的控制了隐伏基底基岩面起伏的原始形态 ,准确判定了基底隐伏构造断裂的发育特征 ,为评价新构造活动对机场工程建设的危害提供了可靠的依据
The deep seismic exploration was conducted in the main runway of Datong airport to be constructed in order to precisely estimate the developing characteristics of structural fracture of the basement, which underlies the loose stratum belonging to the quatemary system. The depth of the seismic exploration is 1 000m, which not only penetrates the loose stratum completely, but also enters the bed rock 140～400 meters. The conclusion is that there is no possibility inducing the geological disaster by the airport construction in the land selected.
The deep seismic exploration was conducted in the main runway of Datong airport to be constructed in order to precisely estimate the developing characteristics of structural fracture of the basement, which underlies the loose stratum belonging to the quatemary system. The depth of the seismic exploration is 1 000m, which not only penetrates the loose stratum completely, but also enters the bed rock 140～400 meters. The conclusion is that there is no possibility inducing the geological disaster by the airport construction in the land selected.
引文
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